[workspace-dev] [Bug 7077] New: problem during backout obscures the real problem

[bugzilla at globus.org]

https://bugzilla.mcs.anl.gov/globus/show_bug.cgi?id=7077

           Summary: problem during backout obscures the real problem
           Product: Nimbus
           Version: 2.5
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P3
         Component: Workspace control
        AssignedTo: tfreeman at mcs.anl.gov
        ReportedBy: tfreeman at mcs.anl.gov
                CC: workspace-dev at globus.org


During mount+alter, a user can run into an "exception in the exception handler"
situation that we usually take care to avoid.

1. There is a problem that is occuring where an issue occured
mounting/unmounting/editing and it left the image mounted.

2. The program is attempting to inform us of this problem.

3. In the process of the exception being raised and reported, a cleanup of the
mountpoint directory is still attempted. The cleanup fails because of
permissions (mostly expected if the image is still mounted) and we are only
seeing this failure in the logs.

Instead of waiting for a bugfix, the way to uncover "the true problem" would
be to remove line #506 from the following file:

  /opt/nimbus/src/python/workspacecontrol/defaults/ImageEditing.py

The line is "raise UnexpectedError(errstr)" in the "_deldirs" function.

After removing the line, the error will be logged but the original problem
will now be raised and logged as well.  And that is likely going to be a more
typical issue, whatever it is.

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